Why does Cl accept 1 electron from Na although Cl has only 17?
Well, chlorine gas is oxidizing . it accepts electrons, and therefore it is itself REDUCED. And we represent this in the usual way \dfrac{1}{2}Cl_{2}(g) +e^{-} \rightarrow Cl^{-} But sodium metal is REDUCING . i.e. it DONATES electrons Na(s) \rightarrow Na^{+} + e^{-} And we add the half equations together to represent the way the elements make music together to form a salt. Na(s) +\dfrac{1}{2}Cl_{2}(g) \rightarrow Na^{+}Cl^{-}(s) A sodium metal atom has...